Q.How do the melting of the Arctic ice and glaciers of the Antarctic differently affect the weather patterns and human activities on the Earth? Explain.
How to approach: Break the explanation into logical causal factors, illustrate with a diagram/flowchart or map where relevant, and link to contemporary relevance.
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The Arctic is a semi-enclosed ocean covered by a thin layer of seasonal sea ice, whereas Antarctica is an elevated, land-based continent covered by a massive, thick ice sheet. Consequently, their melting processes impact global weather and human activities in distinct ways.
Body
| Aspect | Arctic Ice Melting | Antarctic Glacier Melting |
|---|---|---|
| Atmospheric Circulation | Slows down the polar jet stream, causing it to meander and bring extreme weather southward. | Slows down the Atlantic Meridional Overturning Circulation (AMOC), disrupting the Gulf Stream. |
| Oceanic Cycles | Disrupts the ENSO cycle, leading to more frequent and erratic El Niño events. | Leads to colder winters and hotter summers in the North Atlantic region. |
| Wind and Storms | Intensifies Central Pacific trade winds and weakens extra-tropical cyclones. | Triggers extreme weather events across Europe. |
| Global Warming Feedback | Albedo loss accelerates warming in the middle latitudes. | Warming of the Antarctic Circumpolar Current amplifies global temperature rise. |
| Economic & Trade Opportunities | Opens up the Northern Sea Route, reducing global shipping times and costs. | Does not open major trade routes but threatens global coastal infrastructure. |
| Local Livelihoods | Restricts traditional hunting, fishing, and herding activities of indigenous populations. | Causes severe sea-level rise, threatening Small Island Developing States (SIDS). |
| Human Health & Ecology | Causes physiological stress in species and communities adapted to cold climates. | Accelerates coastal erosion and storm surges, endangering coastal communities. |
Conclusion
Mitigating these catastrophic changes requires the stringent implementation of global climate policies to reduce greenhouse gas emissions and preserve these vital polar ice reserves.
Question Specifications, Marking Rubric & Syllabus Mapping
| Examination & Year | UPSC Civil Services Mains Examination 2021 (Question 7) |
|---|---|
| Paper & Syllabus Topic | General Studies Paper I — Heritage, History, Society & Geography → Physical, Human & Indian Geography |
| Marks, Word Limit & Ideal Time | 15 Marks • 250 Words • Ideal Writing Time: 11–12 Minutes |
| Directive Word & Core Demand | Explain: Clarify the underlying causes, mechanisms, and significance of the phenomenon in plain, structured terms. |
| Recommended Structure Split | Intro: ~30–35 Words • Body: ~175 Words (4–5 sub-headings + diagram/data) • Way Forward: ~35–40 Words |
| AI Practice & Evaluation Tools | Upload Handwritten Answer for 3-Min Vision AI Evaluation | Generate Custom Answer & Mind Map |
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Frequently Asked Questions — UPSC Mains 2021 GS1 (Geography)
How should I structure the answer for this UPSC Mains 2021 GS Paper I question on Geography?
This 2021 GS Paper I question carries 15 marks with a 250-word limit and uses the "Explain" directive. Break the explanation into logical causal factors, illustrate with a diagram/flowchart or map where relevant, and link to contemporary relevance. Follow the ideal word split (Intro: ~30–35 Words • Body: ~175 Words (4–5 sub-headings + diagram/data) • Way Forward: ~35–40 Words) and aim to finish within 11–12 Minutes.
Which UPSC Mains syllabus topic does this 2021 question belong to?
This question is part of General Studies Paper I — Heritage, History, Society & Geography under the syllabus module "Physical, Human & Indian Geography". You can explore all repeated questions from Geography in Acme AI's 3D PYQ Realm or filter all Geography PYQs on the Mains PYQ Directory.
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